Re: VTOL version of the Sparrow Hawk?

[[email protected]]

On Saturday, March 2, 2013 9:32:03 PM UTC-7, GM wrote:
> http://www.jobyaviation.com/home
>
> Anyone having more details on this one?
>
> GM

How would you take off or land in a 20kt wind? Think about the scenarios and wing angle of attack for higher wind speeds.. Just sitting on the ground the wing is a big sail...

[Eric Greenwell[_4_]]

On 3/4/2013 8:32 AM, wrote:
> On Saturday, March 2, 2013 9:32:03 PM UTC-7, GM wrote:
>> http://www.jobyaviation.com/home
>>
>> Anyone having more details on this one?
>>
>> GM
>
> How would you take off or land in a 20kt wind? Think about the
> scenarios and wing angle of attack for higher wind speeds.. Just
> sitting on the ground the wing is a big sail...

Maybe it still works easily if you turn the aircraft perpendicular to
the wind, so the wing isn't a big sail.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

[Discus 44]

Based on the tilt rotor designs of the past I see many issues making this idea work. 8 motors at what weight? Where are the batteries? I don't think the is anything other than a pipe dream.

TU

[Eric Greenwell[_4_]]

On 3/4/2013 3:01 PM, Discus 44 wrote:
> Based on the tilt rotor designs of the past I see many issues making
> this idea work. 8 motors at what weight? Where are the batteries?
> I don't think the is anything other than a pipe dream.

I saw the unpainted prototype in one of Windward Performance's hangars
over a year ago. The motors are small, very high output (a Joby
specialty), and the propellers are carbon fiber - very light. It's not
really a "tilt rotor" in my understanding, but a tilt wing with normal
motors and propellers (not rotors). Tilting small propellers is a lot
different than tilting big rotors.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

[Bob Cook[_2_]]

yeah....you can make a computer animation do just about anything. That
thing should work well in model airplane scale...but scaling up electrics
has some issues. What kind of license do yo need..rotorcraft? airplane?
motorglider?

Plus they already invented and perfected something like this...it is called
a helicopter. I bet, a helicopter, you can buy cheaper and is easier to
fly, better range, can carry 2 or more people etc, etc...

What ever happened to that guy with the "flying car" that had like 8 piston
engines hooked up to ducted fan rotors?

Cookie







At 23:01 04 March 2013, Discus 44 wrote:
>Based on the tilt rotor designs of the past I see many issues making this
>idea work. 8 motors at what weight? Where are the batteries? I don't
>think the is anything other than a pipe dream.
>
>TU
>
>
>